errlog_open,errlog_directory and errlog_find_first subroutine come from the book of Technical Reference: Base Operating System and Extensions, Volume 1.

1.Return error code:LE_ERR_IO, means An i/o error occurred. How to solve this question?
2.Are there any other book to explain errlog subroutine? It has too little infomation in Technical Reference: Base Operating System and Extensions, Volume 1.
3.My mail address:zhguowen0103@hotmail.com